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Finding the Fourth Proportional to 492,770.30, 739,155.45 and 439,626.20

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Solution

The fourth proportional to 492,770.30, 739,155.45 and 439,626.20 is: 659,439.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,770.30 : 739,155.45 = 439,626.20 : x
  2. Step 2: Convert to fraction form
    492,770.30/739,155.45 = 439,626.20/x
  3. Step 3: Cross multiply
    492,770.30x = 739,155.45 × 439,626.20
  4. Step 4: Simplify right side
    492,770.30x = 324,952,101,692.79
  5. Step 5: Solve for x
    x = 324,952,101,692.79/492,770.30
  6. Step 6: Final answer
    x = 659,439.30

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.